I have a specific case where I need to wait for a async calls result before continuing. I am using the async/await keywords, but not having any luck. Any help appreciated.
This is my attempt to try getting it to work, the numbers should be in numerical order.
function sleep(ms) { return new Promise(resolve => setTimeout(resolve, ms)); } async function demo() { document.writeln('2...'); await sleep(2000); document.writeln('3...'); } document.writeln('1...'); demo(); document.writeln('4.');2 Answers
The async function will return a Promise, so you need to await the call to demo
const sleep = (ms) => new Promise(resolve => setTimeout(resolve, ms)) const demo = async() => { console.log('2...') await sleep(2000) console.log('3...') } const blah = async() => { console.log('1...') await demo() console.log('4.') } blah()You should use .then() after async function.
function sleep(ms) { return new Promise(resolve => setTimeout(resolve, ms)); } async function demo() { document.writeln('2...'); await sleep(2000); document.writeln('3...'); } document.writeln('1...'); demo().then(() => { document.writeln('4.'); });
